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Finding the Fourth Proportional to 216,574.11, 298,900.04 and 121,086

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Solution

The fourth proportional to 216,574.11, 298,900.04 and 121,086 is: 167,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,574.11 : 298,900.04 = 121,086 : x
  2. Step 2: Convert to fraction form
    216,574.11/298,900.04 = 121,086/x
  3. Step 3: Cross multiply
    216,574.11x = 298,900.04 × 121,086
  4. Step 4: Simplify right side
    216,574.11x = 36,192,609,638.01
  5. Step 5: Solve for x
    x = 36,192,609,638.01/216,574.11
  6. Step 6: Final answer
    x = 167,114.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.